332 results about "Land reclamation" patented technology

The invention provides artificial soil and a method for land reclamation by the aid of gold mine tailing slag backfill exploitation regions. The method includes carrying out filling and compaction onthe tailing waste slag backfill exploitation regions; uniformly mixing various components of the optimally designed artificial soil with one another and ultimately covering tailing waste slag backfillsurfaces with the novel artificial soil with a certain thickness so as to effectively treat mine tailing. The artificial soil and the method have the advantages that the prepared artificial soil contains abundant nutrient components, the contents of organic matters can be increased, the gas permeability of the soil can be improved, and the artificial soil is excellent in water retention capacityand fertilizer preservation capability and suitable for growth of plants; organic thoroughly decomposed substances come from agricultural and forestry waste, are extensive in source and are easily available, accordingly, solid waste can be comprehensively utilized in a 'reduction, resource utilization and harmlessness' manner, and the artificial soil and the method conform to principles of circular economy; the land occupation problems of tailing ponds and the problems in the aspect of tasks of land reclamation of mined-out regions can be simultaneously solved by the aid of the artificial soiland the method, and the artificial soil and the method have large market spaces.

A soft soil foundation reinforcing method includes the following steps: backfilling a medium coarse sand cushion on the site surface, inserting and beating a plastic drainage board, setting up drainage systema in vertical and horizontal directions, burying a pore water pressure layered settlement and lateral deformation observation system; laying a vacuum membrane, installing a vacuum sewerage system, vacuum preloading, filling and rolling when the pressure under the vacuum membrane reaches 80KPa and becomes stable; vacuum-heap combined preloading, starting to dynamic compact when an obvious inflexion appears and the settlement curve tends to be gentle inclined and the accumulated settlement volume reaches 60-70% of the estimated settlement volume; when the settlement curve tends to be stable, stopping vacuum preloading and fully compacting. The method has the advantages of short construction period, low cost, large bearing capacity of the hard shell, and obviously reduced post-construction settlement and uneven sensing settlement, and has unique advantages over land reclamation projects in coastal areas such as Fujian, Zhejiang, Shandong and Liaoning Provinces around which a large amount of stonework material can be excavated and backfilled.

The invention discloses an optimization method of simultaneous harvest and reclamation opportunity of single coal layer based on mining subsidence simulation and second ploughing rate, relates to dynamic mining subsidence prediction and GIS (Geographic Information System) analysis processing, and belongs to the field of mining technology, land utilization and land rehabilitation, and the method is used for solving the problem of unstable mining subsidence land reclamation and realizing the simultaneous harvest and reclamation of underground coal mine regions. The method comprises the steps of: considering the subsidence visual simulation of landform before mining, the ground subsidence scene simulation of time domain and the optimization of the simultaneous harvest and reclamation opportunity based on the second ploughing rate on the basis of onsite file collection and analysis and based on a probability integral method and a mining subsidence predict of Knothe time function. The method disclosed by the invention performs dynamic scene simulation and reclamation opportunity optimization on the subsidence to determine the optimal reclamation opportunity under special mining conditions and natural conditions, thereby rescuing the precious surface soil resources of plain mining areas to the uttermost and planning, protecting and treating the lands to be suffered from subsidence damage in advance, so as to improve the reclamation rate, reduce the reclamation cost, promote the sustainable utilization and sustainable development of mining area land resources, and guarantee the coordination and synchronous development of coal resource mining and cultivated land protection.

The invention discloses a method for increasing the elevation of an intertidal zone to form a suitable land for mangrove forest. The method mainly includes key steps of determining a target elevation; determining land reclamation boundaries; constructing cofferdams; constructing fences; implementing earth filling; flattening filled earth; constructing artificial tidal creeks; realizing temporary fixing measures; and the like. The inventor aims to increase the elevation of the intertidal zone by the aid of engineering means, requirements of mangrove plants on hydrology, sediment and other conditions can be rapidly met, the suitable land for the mangrove forest is formed and created, accordingly, afforestation success rate is increased, coastal ecological safety and sustainable development of China are promoted, and land safety and ecological safety of coastal zones are effectively maintained.

The invention discloses a heavy metal polluted sludge treatment method which comprises the following steps: conveying heavy metal polluted bottom sludge of rivers, lakes and reservoirs by a slurry pump of a sanddredger ashore; adding heavy metal chelate stabilizer in a first pipeline blender of dredging pipelines; and then adding flocculant in a second pipeline blender; and finally filling sludge in geotextile bags for volume reduction and dehydration; and concreting for 7-50 days after the sludge filling, wherein the sludge treated by the method can be used for land reclamation, greening or landfilling according to different water contents and heavy metal contents. Compared with the prior art, by environmental-protection dredging, transmission by closed pipelines and heavy metal stabilization, the invention completely solves the secondary solution problem of heavy metals; and the invention combines the heavy metal stabilization and a geotextile bag dehydration technology without power consumption without the input of mechanical dehydration equipment, and is suitable for heavy metal polluted sludge treatment in occasions of large treatment area, short work period, small dehydration site, less once investment, low operation cost and the like.

A method for providing storage and transportation for water such as natural precipitation collected from a large area comprising the steps of moving water through a porous medium contained within a natural conduit under a hydrologic potential such that the porous medium reduces evaporative loss of the water during storage and transport and moving the water through a network of a hydrologic circuit where it can be directly supplied to end users.

The invention belongs to the technical field of mine geological monitoring, and discloses a non-fixed wing unmanned aerial vehicle airborne radar mine mining land change monitoring system and method.The system comprises a non-fixed wing unmanned aerial vehicle for loading a lidar, a lidar GPS receiver, an inertial navigation system, a laser transceiver, a static GPS receiver and a control and a post-processing system, and comprises inertial navigation control software, LIDAR data acquisition software, trajectory calculation software, point cloud data calculation post-processing software and point cloud post-processing software. Through acquisition of two or more periods of point cloud data of the non-fixed wing unmanned aerial vehicle airborne radar, changes of mine surface geomorphological height differences in different time periods are formed, a new mine mining land area and elevation change monitoring technology is provided, surface elevation changes such as a mine open mining pit, a slag disposing area and mining subsidence are grasped, and scientific basis is provided for mine geological environment control, land reclamation and development, use and planning.

The invention discloses a dynamic pre-reclamation method for subsided land caused by exploiting a high seam in a plane mining area, which belongs to the technical field of mining and is used for solving the land reclamation problem of the subsided land caused by unstable subsidence mining. The dynamic pre-reclamation method is carried out when a mining subside is not complete and seeper is not formed; the dynamic pre-reclamation method consists of two stages: engineering design calculation and engineering implementation according to the scale, range and target needed to be reclaimed. The stage of engineering design calculation comprises the steps of: calculating a predicated subsidence, dividing the construction field pieces, confirming the construction parameters and the like. Compared with the prior art of 'first destroying and then controlling', the dynamic pre-reclamation method has the following advantages that the dynamic pre-reclamation realizes the full and effective combination of miming and reclamation, can reduce the reclamation investment, shorten the reclamation period, increase the reclamation benefit, and can promote the sustainable utilization of land resources in a mining area and the sustainable development of the mining area, can effectively ease the deterioration of the ecological environment in the mining area caused by the vegetation deterioration due to the mining subsidence and water and soil loss and most extensively protect the land resources.

The invention relates to a fast consolidation method of blow-filled soft soil for land reclamation, comprising the following process steps of: erecting a floating bridge; paving a plastic woven cloth; paving a main pipe and a branch pipe; inserting a plastic drainage plate; embedding a joint and a vacuum degree meter of a vacuum pump and a pore pressure meter monitoring device; paving a geotextile; paving a vacuum film; distributing the vacuum pump and trying to vacuumize; vacuumizing; monitoring construction; and carrying out vacuum water covering united pre-loading and unloading detection, wherein the step of erecting the floating bridge comprises: erecting the floating bridge on the blow-filled soft soil requiring the treatment and building a construction platform and a channel on mud. The invention has the advantages that construction members carry out operations of paving the plastic woven cloth, inserting the plastic drainage plate, laying pipes, paving the geotextile and the like on the floating bridge, thereby the technical problem that the follow-up treatment on the new blow-filled soft soil cannot be instantly carried out by using the traditional soft soil foundation treatment technology is solved, and 2-5 years for consolidating the new blow-filled soft soil naturally before retreatment are saved.

The invention concretely relates to a waste dump extinguishing method to solve problems of easy combustion resumption and generation of a large amount of harmful gases of present waste dumps. The method comprises the following steps: 1, initially grasping the spontaneous combustion case of a waste dump; 2, distributing points on the surface of the fire zone of the waste dump according to a 3-5m grid space, and calibrating and drafting an isothermal line and a gas isoline; 3, determining the depth of the fire zone or hidden combustion points; 4, carrying out waste dump classification and potential safety hazard screening, and treating in a zoning installment mode; 5, carrying out extinguishing cooling on the waste dump with naked fires, carrying out slope cutting, grading and packway construction on side slopes, and carrying out loess coverage; 6, punching and grouting, wherein a flushing solution used in punching is a colloid material, the end angle of a drill is 45DEG, and a composite gel extinguishing material is adopted as a grouting slurry; and 7, carrying out reclamation and ecological reconstruction according to a case that the loess layer thickness is 0.5-0.6m, the vibratory compaction frequency is 6-8, the compaction coefficient is 0.90-0.95, and green side slope plants adopt shrubs. The method has the advantages of elimination of threats of factors of landslip, harmful gas pollution and the like to residents, land reclamation, and repeated extinguishing investment reduction.

The invention discloses a simple method for preparing polyethylene wax from waste plastic, which comprises raw materials, nitrogen, equipment and process flows. The method solves the problems that the prior art is not suitable for private small enterprises to implement on-site reclamation, treatment and utilization by adopting the technical problem that the conventional equipment is matched with simple and feasible process flows of extrusion of a screw extruder, feeding of a cracking kettle, cracking, distillate oil reclamation, emulsified oil reclamation, cooling and crushing, wherein the conventional equipment comprises the screw extruder, the cracking kettle with an electric heater and a stirrer, a stainless steel cooling kettle with a stirrer and a cooling jacket, a stainless steel accommodating tank with an open upper part, a jaw crusher, a vacuum pump, a stainless steel cracking gas reclamation kettle with a cooling jacket, a stainless steel cracking oil storage tank and a stainless steel tail gas emulsifying tank. The simple method for preparing the polyethylene wax from the waste plastic fulfills the purpose of suitability for on-site reclamation, treatment and utilization for the private small enterprises through the conventional equipment and the simple process.

Disclosed is a construction method for carrying out sea reclamation with sand in a shallow sea area through a cutter suction dredger. The cutter suction dredger comprises a cutter suction head, a suction pipe, a power system and a ship body. The cutter suction dredger adopts a mechanical reamer of the cutter suction head to ream the underwater sand soil layer through the power system, and then mechanically excavates and sucks soil through a mud pump of the power system. The sucked sand soil is conveyed to the destination through a pipeline conveying mode, and the construction method for carrying out sea reclamation with sand in a shallow sea area is realized through water separation and sand sedimentation. The construction method includes the steps that A, machines are arranged in place; B, a sand blasting guide pipe is laid; C, soil is sucked in a cutting mode and excavated; D, soil sediments to make land. The sand sedimentting on the seafloor serves as the filling materials of a sea reclamation structure. Cutting of coastal line resources is effectively reduced. The original ecologic environment of the sea is protected to the maximum extent. The work procedures of slurry excavation, conveying, discharging, processing and the like are finished at a time, so that the construction efficiency is improved.

The invention relates to a new method for the land reclamation of mining cave-in areas, which is mainly characterized in that a drain hole is dug at the surface of a subsidence area to underground water layer, and the surface water of the subsidence area is discharged to the underground water layer through the drain hole. A borehole can be dug at the ground to the underground water layer, and the ground waterlogging is discharged to the underground water layer through the borehole. In general case, the water level of the underground water layer is lower than the lowest elevation of the surface subsidence area, and the ground waterlogging can flow to the borehole by gravity to be discharged to the underground water layer. If necessary, a water pump can be adopted to pump the waterlogging that can not flow to the borehole by gravity to the borehole to be discharged to the underground water layer. The invention has the advantages of simple and convenient construction, low cost, capability to restore the original soil ecological environment, economical and reasonable and good effects; thus the function of the method is not only land reclamation but also underground water storage, facilitating the protection of water resource.

The invention belongs to the field of solid waste reclamation comprehensive utilization and particularly relates to a soil conditioner prepared from sludge and a preparation method thereof. The soil conditioner is prepared from river and lake bottom mud, conditioner, medium sand, agricultural and forestry residues, biological manure and plant ash, wherein the conditioner is 5% to 8% of the mass of the river and lake bottom mud, the medium sand is 5% to 10% of the mass of the river and lake bottom mud, the agricultural and forestry residues are 5% to 10% of the mass of the river and lake bottom mud, the biological manure is 1% to 5% of the mass of the river and lake bottom mud, and the plant ash is 1% to 3% of the mass of the river and lake bottom mud. The soil conditioner prepared from sludge disclosed by the invention achieves resource utilization of sludge, also fully utilizes sludge, tailings or river and lake sand, tailing sand, pipe network sand and agricultural and forestry residues at the same, achieves the purpose of treating waste through waste, avoids solid waste landfill, land occupancy and secondary pollution, reduces engineering cost of land reclamation, landscaping, forest land plant and the like and is beneficial to ecological environment; in addition, the river and lake sand, the tailing sand, the pipe network sand and the agricultural and forestry residues are separated and sorted from pipe network sludge.

The invention discloses a soil environment quality hierarchical discrimination method of reclaimed land hierarchical safe utilization. According to the method, two soil safety thresholds based on the sanitation and the safety of agricultural products are set: the threshold I and the threshold II; three types of safe utilization approaches are specified according to the corresponding pollution risk level of the two thresholds: the priority farming area, the restricted farming area and the ecological control area; and the final value of the threshold II of the soil pollutant is determined by constructing the quantitative relation between the crop pollutant content and the soil pollutant concentration through the pot experiment. The numerical interval of the threshold I and the threshold II is large, the range of application is wide and operability is high so that the local cultivated land resources can be supplemented to the greatest extent. According to the method, the quantitative relational expression between the soil and the crop pollutant content is constructed through the pot experiment so that the reliable technical route and method can be provided for researching and formulating the localized soil environment quality standards for the reclaimed lands for all the regions by combining the local soil pollution characteristics, the land reclamation requirements, the crop planting habits and other factors.

The invention discloses a soil conditioner. The soil conditioner comprises the following components calculated by dry weight, in percentage by weight: 80%-85% of sludge and 15%-20% of flyash. The soil conditioner is environmental-friendly and suitable for soil remediation in desolated mountains and mine areas, can effectively prevent harmful gases released by the sludge from dispersing into the atmosphere, and at the same time has the effects that the soil fertility is prominently improved and the site condition for a plant is improved as well. The soil conditioner provided by the invention is easy and practicable, enables waste to be profitable, and can quicken soil remediation and land reclamation.

The invention relates to a technique for soil reclamation by combining the techniques of digging a channel on saline-alkali soil, covering a membrane and drop irrigation by using the salt and water transportation principle of 'salt comes with water and goes with water'. Based on the traditional drop irrigation technique, a channel is dug under the membrane before seeding. After seeding, the soil under the membrane is about 10 to 20 cm lower than the bare soil between two membranes, the crop row spacing is 8 to 15 cm, the line spacing is 30 to 60 cm, and the width of the bare area between the two membranes is 30 to 60 cm. The technique can be widely applied to improving soil and has the advantages of soil moisture conservation, drought resisting propriety, soil improvement, temperature preservation, fertile maintenance, low cost, high salt rejection rate, and the like.

The invention discloses a modified phosphogypsum material used for sea reclamation. Phosphogypsum is modified by raw material selection and proportioning so as to make the phosphogypsum suitable for sea reclamation. The materials comprise phosphogypsum and composite yellow phosphorus slag gelling powder. The composite yellow phosphorus slag gelling powder is mixed powder composed of crushed water-quenched yellow phosphorus slag generated in a yellow phosphorus production process and cement clinker. With the characteristics of high fill strength, fast curing speed, good water resistance and high compressive strength, the modified phosphogypsum material used for sea reclamation provided by the invention not only can meet the compressive strength requirements of road building, wharf construction and the like, but also can make heavy use of the solid waste in the phosphorus chemical industry, thus solving the constraint bottleneck problem of waste residue utilization during sustainable development of the phosphorus chemical industry. And the modified phosphogypsum material suitable for sea reclamation is provided.

The invention relates to a combined treatment method for used water glass sand reclamation and reclamation treating liquid concentration. The combined treatment method comprises the steps of: adding used water glass sand reclamation treating liquid into a concentration device, and placing used water glass sand into a used water glass sand reclamation device; leading in water vapor being 100 DEG C or water vapor being above g 100 DEG C to the concentration device, heating, evaporating and concentrating the used water glass sand reclamation treating liquid; discharging secondary vapor from the concentration device to lead into the used water glass sand reclamation device; and spraying and leaching the used water glass sand with the led-in vapor, so as to obtain the reclaimed water glass sand. According to the combined treatment method for the used water glass sand reclamation and liquid concentration treatment, the removal rate on the residual adhesive films of the used sand is high, and the treating effect is good, the reclaimed sand subjected to dewatering and drying treatment can meet the casting requirement; and the water consumption is little, concentrated waste water is simply and feasibly utilized, the energy consumption is little, and the water glass sand can be effectively reclaimed and utilized, thereby saving resources and lowering the cost.

The invention belongs to the field of technologies for protecting environments, and particularly discloses an agent vacuum pre-compression method for treating engineering waste slurry. The agent vacuum pre-compression method includes basic steps of adding appropriate quantities of appropriate types of chemical agents into the waste slurry to reduce the water content of the waste slurry and forming sediments with certain framework structures; applying vacuum loads to the sediments to pre-compress the sediments, reducing the water contents of the sediments until preset requirements are met, stopping applying the vacuum loads to the sediments, disassembling vacuum drainage systems and transporting mud to required places after solid and liquid in the mud are separated from each other. The agent vacuum pre-compression method has the advantages that the agent vacuum pre-compression method is high in treatment capacity and treatment efficiency, tens of thousands of squares of slurry to hundreds of thousands of squares of slurry can be treated at one step, and accordingly the agent vacuum pre-compression method is particularly applicable to intensive slurry treating; the mud is low in water content and high in strength after the solid and the liquid in the mud are separated from each other, and can be used as raw materials of building materials, and shortage of earthwork can be overcome if the mud is used for brick manufacturing or building place backfill; the agent vacuum pre-compression method can be used for land reclamation, enclosure regions can be filled with the ultimately treated mud, accordingly, the construction periods can be shortened, and the cost can be lowered.

The invention discloses a method for extracting the depth of a shallow buried pipe in a reclamation land, and the method comprises the steps: arranging a ground penetrating radar measuring line in a direction perpendicular to the distribution direction of the buried pipe, employing a high-frequency ground penetrating radar antenna for detection, and obtaining an original radar image of a research area; building a method based on the variance statistics, and extracting a target region of the buried pipe on a radar image; calculating the similarity level and correlation coefficient of adjacent echo signals, extracting feature points (shown in the description) of a reflection characteristic curve of a pipe target; carrying out the curve fitting of the feature points through employing a Levenberg-Marquardt algorithm, and obtaining the top point of a reflection characteristic curve; obtaining the electromagnetic wave propagation velocity based on the above through combining the diameter of the buried pipe and employing a least square algorithm, and finally calculating the depth of the buried pipe more accurately. The method employs the lossless detection technology based on the ground penetrating radar, and is a new method for the acceptance check of the land reclamation and consolidation projects of our country.

The invention provides a sludge porous material and a preparation method thereof. The porous materials is prepared from the following raw materials in percentage by weight: 30-50% of sludge, 30-50% of gangue, 10-30% of shale, 2-8% of natural zeolite, 0.2-1.5% of dolomite, 0.2-1.5% of sodium carbonate and 0.2-0.8% of ferric oxide; the preparation method of the sludge porous material comprises the steps of raw material processing, granulating and drying, and ceramsite firing; the porous materials which is porous, high in specific surface area and lightweight can be prepared by taking an organic matter in municipal sludge as a gas generating bulking component of the porous material and the sludge of printing and dyeing as well as papermaking which has the characteristic of abundant fiber component as a pore filling agent, and therefore, the sludge is utilized efficiently, the problem of recycling the sludge is solved, and the product can be applied to a plurality of fields such as building materials, chemical engineering, land reclamation and packings; in short, the development of economic construction is promoted while the sludge is utilized.

The method and apparatus for shoreline land mass reclamation which includes replacement of at least one groyne section along a shoreline wherein the section includes a pair of spaced stanchions which are connected by at least one linkage member which supports vertically extending baffle elements and wherein the at least one linkage member is piovtably connected such that the spaced stanchions may be vertically adjustable relative to one another.

The invention discloses a method and a device thereof for preparing hydrogen by utilizing metallurgical slag waste heat to reform regenerative resources rich in methane. According to the method, through the chemical reactions of reforming methane and carbon dioxide to convert the methane and the carbon dioxide into the hydrogen, high-temperature waste heat which is difficult to utilize is converted into chemical energy, and high calorific value substances such as the hydrogen and the like are simultaneously obtained; the sizes of steel and iron slag granulated particles can be controlled through process conditions of mixed gas flow rate, subsequent ball milling and the like by the method; and because the steel and iron slag contains a large quantity of alkaline substances such as calcium oxide and the like, after the temperature of molten slag is reduced, excess carbon dioxide gas can be absorbed by the steel and iron slag in a ball milling device so as to have a fixing effect on the carbon dioxide, and the steel and iron slag after carbon fixing can be further used as a building material or a land reclamation material.

The invention relates to a tea-oil tree planting method. The tea-oil tree planting method comprises the following steps of selection of planted land, selection of good tea-oil tree seeds, planting, young plant management and protection, mature plant tending management, forest land reclamation, forest land weeding, forest land intercropping, forest land fertilization, mature plant pruning, prevention and control of tea-oil tree disease and inset pests and harvesting. Comprehensive, systematic and scientific planting is adopted from tea-oil tree land selection ad planting to field control at allstages in growth, so that the tea-oil tree survival rate is high, the adaptability of tea-oil trees is good, advanced fruit bearing can be achieved, the problems of later fruit bearing, low benefit,low yield and the like are solved, the economic output of tea-oil tree land is high, industrial development of tea-oil trees in our country is promoted, the self-sufficiency degree of edible vegetableoil in our country can be improved, and a demonstration prototype is provided for large-scale establishment of a tea-oil tree production base.

The invention discloses a treating system for land reclamation of a refuse landfill site and a treating method, wherein the treating method comprises the following steps: the whole landfill site is dug again, and all substances outside large objects are crushed; all the substances enter a first-group roller sieving machine for separation; the substances on the sieve are packaged by combustible materials sorted by a winnowing machine; bricks / tiles / stones are filled on site; the substances under the sieve enter a second-group roller sieving machine for separation; the substances under the sieve are magnetically separated and are prepared into humus soil for soil improvement; the substances on the sieve are transferred to the second-group windowing machine for separation; and harmless land is obtained. The treating system and the treating method disclosed by the invention have the beneficial effects that the devices are matched to remove large refuse materials, and refuse clearing is quickly finished in limited time by sectioned treatment of multi-stage sieving, so that the purpose of harmless reclamation is realized for the land in short period; a large amount of cleared and processed humus soil can be used for planting forest trees to absorb carbon dioxide and release oxygen, so that the conditions of atmospheric pollution and haze can be improved; and especially, the land resource can be reutilized, so that the treating system and the treating method has immeasurable strategic significance for guaranteeing the warning limit of arable land of China.

The invention discloses a testing device for simulating a warp self-weight settlement consolidation process by a settlement column indoors, comprising an organic glass tube settlement column, a slurry stirrer, a soil sample geotome and the like. The body of the settlement column is connected with a base; a paper ruler is adhered outside the tube wall of the column body; slurry suspension is injected behind the body of the organic glass tube settlement column, the slurry suspension is stirred and mixed uniformly up and down by inserting the stirrer; the opening of the column body is sealed by a rubber band after the opening of the column body is sealed by a seal membrane; the settling height of the suspension level along with time is recorded by observing the paper ruler outside the tube wall so as to study the free settling law of the warp slurry under self-weight action; and after the warp self-weight settlement consolidation process is completed, soil is taken by the geotome layer by layer, the void ratio e of soil layers with different depths is detected, the warp self-weight consolidation law is studied, and the soil body consolidation coefficient cv is calculated. The testing device has the characteristics of small floor area, convenient operation, accurate and reliable data observation, less moisture loss, small soil sample disturbance and the like, and can be applied to early test study of river channel training, harbor desilting, backfill land reclamation and other engineering.

The invention discloses a land reclamation monitoring method and device for an opencast mine area. The land reclamation monitoring method for the mine area comprises: determining a plurality of monitoring indexes and weights of the plurality of monitoring indexes for land reclamation of a to-be-monitored mine area; calculating the monitoring indexes for land reclamation of the to-be-monitored mine area according to the numerical values of the plurality of monitoring indexes and the weights of the plurality of monitoring indexes; and monitoring land reclamation of the to-be-monitored mine area according to the monitoring indexes. The method and the device solve the technical problem that in the prior art, monitoring and evaluation on the effect of land reclamation of the mine area are incomplete.

The invention relates to a coal mining ground fissure moisture damage detection method taking space-time difference and rainfall impact into consideration, and belongs to the technical field of environmental monitoring. The method comprises the following steps: establishing a spatial coordinate system for ground and underground comparison, and selecting an undisturbed area at the front end of the working plane mining progress as a moisture monitoring area; determining moisture background value and moisture spatial distribution of the monitoring area; acquiring fissure position located in a moisture contour line, of the monitoring area; determining soil moisture background value around a fissure; actually measuring the soil moisture background value around the fissure in the whole ground fissure development cycle; correcting moisture content in which rainfall impact is excluded; and obtaining moisture content in which spatial variability impact is removed. By adopting the method provided by the invention, the moisture damage impact of ground fissure on the surrounding soil can be more fully and scientifically grasped to provide data information for regional land reclamation and ecological environment.

A northeast region paddy field classification and information extraction system and a method are disclosed. The system comprises four portions of data preparation, paddy field classification, attribute addition and paddy field extraction. According to northeast-region cultivated land utilization realities, the paddy fields are divided into a ''well irrigation paddy field'' and a ''canal irrigation paddy field''. The well irrigation paddy field is the paddy field which is irrigated by underground water pumped through using a motor-pumped well. The 'canal irrigation paddy field is the paddy field which is irrigated by water sources of a canal system irrigation channel, a lake, a river, a reservoir, a pond and the like. Through a land, by using a current state data, a high-resolution remote sensing image, land reclamation data and other data, according to a canal system distribution state, classification and extraction of the 'well irrigation paddy field and the canal irrigation paddy field are realized through visual interpretation. Generally speaking, the paddy field in an irrigated area is the canal irrigation paddy field and the canal irrigation paddy field has relatively complete channel systems of a main canal, a branch canal, a lateral canal, a sublateral canal and the like; a canal system of a well irrigation paddy field area is simple and does not form a system; a surrounding electro-mechanical well is radiated outwardly; the channel is narrow; and a northeast region well irrigation paddy field area generally has a sunning water pool with a large area.